Above is a picture of my new Silo 3, which I really think is an excellent guitar for the price range. However, after restringing for the first time, I've noticed some sustain issues on the 4th (G) and 5th (B) strings, and they sometimes go wildly out of tune also (which the guitar didn't do at all before).
What I figured out is that since the tuning pegs are furthest away from the nut on those strings, there is very little downward pressure on the nut for those two strings. The string can be "tuned", but it almost wants to mute itself on the nut because it is close to a 0 degree angle, if that makes any sense.
The easiest fix might be to wrap the string so it releases from lower on the tuning peg. I have my string releasing more in the middle, and that could be part of the issue.
Is there anything else I could be adusting? Would the truss rod do anything? If so, which way would I crank it?
Thanks for the input. I notice that the downward pressure on the higher strings is important for this reason, which is why you see those "string trees" on other headstock designs, such as this: